The ASUS TUF GAMING B550-PLUS WIFI is the objective winner of this comparison, securing more wins across the evaluated specifications. Its most significant advantage over the Gigabyte B660M DS3H DDR4 is the inclusion of PCIe x1 slots, which offer a 200% improvement in that specific category. While both motherboards share several identical features, the ASUS TUF GAMING B550-PLUS WIFI provides superior expansion capabilities for users requiring additional connectivity options for their system builds.

Users prioritizing hardware expansion should select the ASUS TUF GAMING B550-PLUS WIFI to take advantage of its superior PCIe x1 slot configuration. Conversely, the Gigabyte B660M DS3H DDR4 is the appropriate choice for budget-conscious builders, as it holds a 44% advantage in MSRP. Choosing between these two components depends entirely on whether your primary requirement is the increased expansion capacity offered by the former or the lower cost provided by the latter.